Home / 123,644.20-185,855.10-121,311.40

Finding the Fourth Proportional to 123,644.20, 185,855.10 and 121,311.40

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Solution

The fourth proportional to 123,644.20, 185,855.10 and 121,311.40 is: 182,348.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,644.20 : 185,855.10 = 121,311.40 : x
  2. Step 2: Convert to fraction form
    123,644.20/185,855.10 = 121,311.40/x
  3. Step 3: Cross multiply
    123,644.20x = 185,855.10 × 121,311.40
  4. Step 4: Simplify right side
    123,644.20x = 22,546,342,378.14
  5. Step 5: Solve for x
    x = 22,546,342,378.14/123,644.20
  6. Step 6: Final answer
    x = 182,348.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.